17:  How do I install a piece of Texinfo documentation?

  First, you must turn the Texinfo files into Info files.  You may do this
  within Emacs, using "M-x texinfo-format-buffer", or with the stand-alone
  "makeinfo" program, available as part of the latest Texinfo package at

    ftp://prep.ai.mit.edu/pub/gnu/texinfo-3.1.tar.gz

  and all prep mirrors (see question 89 for a list).

  For information about the Texinfo format, read the Texinfo manual which
  comes with Emacs.  This manual also comes installed in Info format, so
  you can read it on-line.

  Neither texinfo-format-buffer nor makeinfo installs the resulting Info
  files in Emacs's Info tree.  To install Info files:

  1. Move the files to the "info" directory in the installed Emacs
     distribution.  See